Blastocoelomates Flashcards

1
Q

Name the 9 traits of Blastocoelomates

A
  1. Unsegmented, triploblastic
  2. Persistent blastocoel
  3. Complete gut
  4. Excretory system
  5. Dorsal and ventral nerve cords
  6. Layered cuticle
  7. Only longitudinal muscles - muslce arms
  8. No circulatory system
  9. Dioecious
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2
Q

What is the 1 synapomorphy of Blastocoelomates?

A

They have muscle arms

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3
Q

Do blastocoelomates have cilia and circular muscles? Why?

A

They don’t because their cuticle is too thick

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4
Q

Nervous system

A

Dorsal and ventral nerve cord

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5
Q

What coelom do they have?

A

Blastocoelom

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6
Q

Excretory system

A

Has excretory duct

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7
Q

What type of muscles do they have

A

Longitudinal muscles - when contracted, it bends

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